Photographic diffuser



FIG. 1 is a perspective view of a photographic light diffuser showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, the undisclosed left side view being a mirror image;

FIG. 4 is a rear elevational view;

FIG. 5 is a top plan view threof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a photographic diffuser, as shown and described. 